abc's steve osunsami starts us off with the very latest on this growing story. >> reporter: the accusations are so explosive, the nfl commissioner late today called for a formal investigation. were miami dolphin coaches, the ones encouraging veteran lineman richie incognito told to toughen up jonathan martin. martin checked himself into a hospital for emotional stress. joe fill bin defended the team. >> since the day i walked in these doors it's been one of honesty, respect and accountability to one another. >> reporter: incognito has a well earned reputation. in this video circulating from a sports bar, his famous short fuse is on dis explain. he's accused of sending racial slurs and voice mails. >> there is no room for bullying in this league. >> reporter: former coach her man edward says bullying has no place in the locker room. >> i never asked a player to toughen someone up. i always felt that was the coach's job to do. >> reporter: on sports radio came in bombshell from legend warren sapp. >> he kicks me and calls me a word and says oh, you want me to punch you into the mouth. >> the